12057: Mesquite control on Nicholson Station

    Map of project area. Courtesy Ord land and Water.
    Map of project area. Courtesy Ord land and Water.

    Mesquite (Prosopis glandulosa), a Weed of National Significance, currently infests 17 600 hectares of pastoral land on Nicholson Station at the southern extremity of the Ord River catchment.

    The station is upstream of a number of other pastoral stations as well as two Ramsar-listed wetlands (Lake Argyle and Lake Kununurra), the Ord River Regeneration Reserve, and the World Heritage Listed Purnululu National Park.

    These areas are under direct threat from the weed as it is able to out-compete native vegetation and drastically alter ecosystems due to its drought tolerance and resilience in a very wide range of habitats.

    Mesquite can also prevent native animals and stock from accessing water supplies.

    This project follows on from initial control work carried out in 2012 where mature trees were removed. It will target wet season germinations using a mixture of mechanical and chemical methods that proved effective in 2012.

    Investment: $ 20 000
    Delivery organisation: Ord land and Water
    Project duration: January 2013 - December 2013
    Location: Nicholson Station in the Kimberley Region, approximately 250 kilometres south of Kununurra

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